Hyundai HC20V4A-A Original Instructions Manual page 16

USING THE AIR COMPRESSOR

Ensure that the ON/OFF switch is in the OFF position and the battery packs are not installed.

Attach air hose following the instructions in Connecting/Disconnecting Air Hose (hose not provided).

Attach 1/4 in. NPT quick-connect air fitting to the accessory or tool you intend to use. Insert the other
end of the quick-connect air fitting to the quick coupler on the open end of hose.

Install the battery packs.

Move the ON/OFF switch to the ON position.

Set the amount of air pressure desired using the pressure regulator knob. Pull the knob out, then turn
clockwise to increase or counterclockwise to decrease the air pressure through the hose. When the
desired pressure is set, push the knob back in to lock.

When finished, always drain the tank, turn the unit off, and remove the battery packs. Never leave the
unit on and/or running unattended.
NOTE: Always use the minimum amount of pressure necessary for your application. Using a higher pressure
than needed will drain air from the tank more rapidly, cause the unit to cycle on more frequently, and reduce
battery run time between charges. Following all safety precautions in this manual and the manufacturer's
instructions in the air tool manual, you may now proceed to use your air-powered tool.
DRAINING THE TANK (FIG.C)
To help prevent tank corrosion and keep moisture out of the air used, the air tank of the compressor should
be drained daily.
To drain:

Turn the air compressor off and remove the battery packs.

Pull the ring on the safety valve to release air until tank pressure gauge reads less than 20psi.

Release the ring.

Turn the drain valves 90° counterclockwise to the ON (open) position.

Tilt tank to drain moisture from tank into a suitable container.

If a drain valve is clogged, release all air pressure, remove and clean valve, then reinstall.

Turn the drain valves 90° clockwise to the OFF (closed) position.
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